Table of Contents
Advertisement
5.1.6 DETAILS
Self check is performed for the following items:
<Page 1 of screen>
Detection item
Display
Low bias line short
protection
MAIN MEMORY
AUDIO
RF (ANALOG) TUNER
HDMI
<Page 2 of screen>
Detection item
Display
SYNC SIGNAL
For designing
For designing
For designing
For designing
For designing
For designing
For designing
5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT
In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.
Type of error
Low bias line short protection
< Explanation of operation >
If error is detected, the power is turned off. Shortly after the power is turned off, POWER LED will be blinked.
When the protection of low bias line short operates, the power cannot be turned on until the power cord takes out and inserts, after the
power is turned off.
Victor Company of Japan, Limited
Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan
(No.YA682<Rev.001>)
Detection content
LOB
Confirm the operation of the low bais(1V/3.3V/5V/
12V) protection circuit.
1V:
Q9351
[MAIN PWB]
3.3V:
Q9601
[MAIN PWB]
5V:
Q9201
[MAIN PWB]
12V:
Q9301
[MAIN PWB]
MEM
Confirmation of reply of ACK signal which uses
2
I
C communication.
IC7003
[MAIN PWB]
AIO
Confirmation of reply of ACK signal which uses
2
I
C communication.
IC6661
[MAIN PWB]
TUN
Confirmation of reply of ACK signal which uses
2
I
C communication.
TU1001
[MAIN PWB]
HDM
Confirmation of reply of ACK signal which uses
2
I
C communication.
IC8501
[MAIN PWB]
indicates items not used for services as they are for designing.
Detection content
SYN
Confirmation of presence of sync signal in
selected video signal.
CDN
ADS
ADH
PPL
LPF
INT
FMT
Diagnosis
signal (line)
LB_PRO
SDA
SDA
SDA
SDA
The selected video input signal is always
checked and if there is the sync signal, it is
displayed as "OK", and if not as "NG".
-
-
-
-
-
-
-
POWER LED flash cycle
Blue turnig on and off at 1 second intervals.
Detection timing
Detection starts 5 seconds after
the power is turned on. If error
continues between 200 ms the
power is turned off.
If
it
checks
whenever
communication is performed and
no reply of ACK signal an error
will be counted.
If
it
checks
whenever
communication is performed and
no reply of ACK signal an error
will be counted.
If
it
checks
whenever
communication is performed and
no reply of ACK signal an error
will be counted.
If
it
checks
whenever
communication is performed and
no reply of ACK signal an error
will be counted.
Detection timing
-
-
-
-
-
-
-
2
I
C
2
I
C
2
I
C
2
I
C
Printed in Japan
VPT
Advertisement
Chapters
Table of Contents
